Refrigerated drawer unit



Oct. 22, 1940. w. McK. BAl RD REFRIGERATED DRAWER UNI [T 4 Sheets-Sheet Filed NOV. 24, 1939 Oct. 22, 1940. w. m 2,218,632

' gsmmmnsn DRAWER mm FiledNov. 24, 1939 4 Sheets-Sheet 3 H iii $072 9 Get. 22, 1940. w, McK, BMRD 2,218,632

REFRIGERATED DRAWER UNIT Filed NOV. 24, 1959 4 Sheets-Sheet 4 "9 v 7 f 12 v gag.

.25 drawn on Patented @et. 22 1%0 sraras a ate v 2,218,632 REFRIGERATED DRAWER UNET William McKinley Baird, Chicago, Ill.

2 Claims.

it understood-that the same is susceptible of.

15 modification and change without departing from the spirit of my invention. I Referring to the drawings, Fig. 1 is a front elevation of the outer face of my refrigerated drawer unit; Fig. 2 is an enlarged front view of a tier 20 of the drawers; Fig. 3 is a side elevation of the tier shown in Fig. 2; Fig. 4 is drawn on line iiof Fig. l and shows an elevational view of an end of the unit with the inlet and outlet ducts and .the circulating ducts in dotted lines; Fig. 5 is line 5--5 of Fig. 1 and shows an inside view from the end of the freezing section with the panel removed; Fig. 6 and Fig. 6a are detail views of the panel; Fig; '7 is a detail view of the panel on line l---? of Fig. 6; Fig.8 is an enlarged view 30 of the freezing section withparts broken away to show details; Fig'. 9 is a vertical sectional view of the freezing section on lines-9 of Fig. 8; Fig. 10 is a detailed view on line I --!D of'Fig. Q; Fig.

11 is an enlarged sectional view of the duct with 35 closure block and operating crank, and Fig. 12 is a detailed view of the double window shown in Fig. 9. I

The embodiment selected to illu trate my invention comprises a unit 40 metal and wood, or any other suitable materials, having suitable insulation I2, and tracks i3 attached to the shell H upon which side drawers It. At one end of the unit I!) and attached thereto by vertically extending strips I5 suitably crimped together is a freezing section IS.' The freezing section l6 has therein a compressor ill with a coil is, motor l9, fins and circulating fans 2| driven by a motor 22. I

In operation air comes into freezing section 5 i6 through duct 23 and passes upwardly.into chamber 24, through fins 20 into blowers 2i, whence it is expelled through ducts 25 into unit [0 by way of duct 26 into circulating ducts 21 to outlet duct28. The air then circulates through 55 and around the open portions of the drawers i i in having shell n of.

' therein a Application November 24, 1939, Serial No. 305,815

and finally passes into duct 23 to complete the cycle of circulation. 1

When ice has been built up around the freezing sections l6 and it is desirable to defrost the same, this may be done by turning off motors I9 and 22 5 to stop the freezing action. I then turn operating rod 29 of hingeblock 30 to swing hinge block- 30 across duct 23 to thereby close the same. By operating rod 3| linkage 32 is moved to slide sliding panels 33 to close ducts 25. Chamber 24 is 10 opened to the atmosphere by the removal of screws to permit the opening of double window 35.

A display shelf 36 is positioned behind window to hold vegetables, fruits, biologicals or the like so that the same may be viewed from the exterior 15 of the unit for display and demonstration purposes.

In Figs. 6 and 8 the window 35 is shown as in the 'end panel 38 of the freezing section it. It is within the contemplation of my invention to have 26 the window 35 on either theyfront or back faces of myfreezing section It. v

In Fig. l I have shown a unit it formed of four tiers of drawers in combination with a freezing section it, each tier having four drawers as illus- 25 trated in Fig. 2. It is of course within the spirit of my invention that my unit it may be smaller or larger and that it may be formed of one or any plurality oftiers of drawers together with a freezing section. course not limited to four drawers but may be of any desirable number of lockers. The tiers may be joinedtogether to form the unit it) by a connecting strip 3'l'as shown in Fig. 1. I may provide that the end of my freezing 85 section 66 have a pair of hinged doors fill between a double window 35. This will afford convenient access to the interior for defrosting or attention to the parts of the freezing section, as, shown in Fig. 6a.

Having thus described my invention, I claim:

1. A refrigerated drawer unit. comprising an insulated shell, a plurality of tracks attached to the inner walls of said shell, a plurality of drawers of substantial length, breadth and'height slidable on said tracks, said drawers having lmperforate front walls,said'shel1 having a plurality of spaced openings to receive said front walls, said front' walls have handles to permit any oi'said drawers to be withdrawn from the shell to allow access thereto, said drawers having open air receiving portions, a freezing section having an outer casing attached to one end of said shell and forming a part of the unit, said freezing section having chamber, a compressor, a coil, a plural- The tiers of drawers are of 30" ity of fins, a pair of blowers, a motor for actuating the compressor for refrigerating the air in the chamber, air exit ducts leading from the upper portion of the chamber, and a motor for actuating 5 said blowers for expelling cold air from the chamber outsaid exit ducts, said shell having air -inlet ducts at its" upper portion communicating with the air exit ducts of the freezing section to receive cold air blown therefrom, said shell having a plurality of circulating ducts communicating with said inlet ducts for passing the cold air in and around the open portions of the drawers for refrigerating the contents thereof, said shell having an air exit duct at its lower portion communicating with said circulating ducts for receiving the air therefrom, said freezing section having an air inlet duct at its lower portion communicating with the exit duct of the shell for receiving air therefrom and completing the cycle of air circulation, a rod having one end extending through the lower portion of the outer casing of the freezing section to the exterior thereof, a

hinge block attached to the other encl of said rod adjacent the air inlet duct of the-freezing section, said block adapted upon turning of said rod to swingacross said air inlet duct for closing the same, a second rod having one end extending through the upper portion of the outer casing of the freezing section to the exterior thereof, slid- 5 in one of the walls of the freezing section for access to the interior of the freezing section.

2. A refrigerated drawer unit comprising a shell, a plurality of tracks attached to and within said shell, a plurality of drawers of substantial length, breadth and height slidable on said tracks, each drawer independently withdrawable from the exterior of said shell, said shell having cold air receiving ducts, circulating ducts leading from said cold airreceiving ducts, and a warm air exit duct leading from said'circulating ducts, a freezing section having an outer casing attached at one end to said shell and forming a part of the unit, said freezing section having means for refrig erating and blowing cold air, said freezing section having cold air exit ducts communicating With the cold air receiving ducts of the shell for supplying cold air thereto, said freezing section also having a warm air receiving duct communicating with the warm air exit duct of the shell, a rod having one end extending through the lower portion of the outer casing of the freezing section to the exterior thereof,'a hinge block attached to the other end of said rod adjacent the warm air inlet duct of the freezing section, said block adapted upon turning of said rod to swing across said wanrn air inlet duct for closing the same, a second rod having one end extending through the upper portion of the outer casing of the freezing section to the exterior thereof, sliding panels attached through linkage to the otherend of said second rod adjacent the cold air exit ducts of the freezing section, said panels adapted upon turning of said second rod to slide across said air exit ducts for closing the same, and a window in one of the Walls of the freezing section for access to the interior of the freezing section.

WILLIAM McKINLEY BAIRD. 

